Waelder



(No Model.) 2 Sheets-Sheet 1- H. SOHOENWAELDER.

FURNACE.

No. 480,969. Patented Aug. 16, 1892.

WITNESSES i I [NVENTUR I BY -nfl glgckoe rgv adkr ATTURN Y (No Model.) 2 Sheets-Sheet 2.

H. SGHOENWAELDER.

' FURNACE.

No. 480,969. Patented Aug. 1-6, 1892,

Fig.3.

INVENTUR BYjtezlnr 'L kschoem/vaelaev A TURN NITED STATES PATENT OFFICE.

HEINRICH SOHOENWVAELDER, OF FRIEDENSHIITTE, GERMANY.

FURNACE.

SPECIFICATION forming part of Letters Patent No. 480,969, dated August 16, 1892. Application filed November 30, 1891. Serial No.413,56l- (No model.)

To all whom it may concern.-

Be it known that I, HEINRICH SOHOEN- WAELDER, a subject of the King of Prussia, residing at Friedenshiitte, in the Kingdom of Prussia, Germany, have invented new and useful Improvements in Furnaces, of which the following is a specification.

My invention relates to furnaces in which gaseous fuel is used and in which regenerators are employed to heat the fuel and the air for supporting combustion.

It has for its object to render the furnace and regenerators more effective and durable; and to this end it consists in certain novel features in the construction and arrangement of the plant, as fully pointed out in the following specification and claims and illustrated in the accompanying drawings, in which Figure 1 represents a side elevation, partly in section, on the line 00 00, Fig. 3, of a furnace constructed according to my invention. Fig. 2 is a horizontal section in the plane 1 y, Fig. 1. Fig. 3 is a vertical section in the plane z 2, Fig. 1. Fig. 4. is a vertical section taken through the hearth on the line m m, Fig. 1. Fig. 5 represents detail Views of the damper.

Similar letters indicate corresponding parts throughout the several views.

In the drawings I have shown the general arrangement of the furnace and regenerators, as usual. To relieve the arches 0f the regenerators from the combined weights of the hearth A and the charge, I support the hearth in the first place upon horizontal iron beams at, having their ends resting upon the masonry forming the side walls of the regenerators. These beams are centrally supported by a wall 13, built up centrally between the side walls and extending throughout the length of the regenerators. The wall projects above the arches of the chambers, and consequently said arches are relieved from the load of the hearth and charge, while the chambers stand free and clear and are easily accessible for repairs without taking up the hearth.

The usual chambers of the regenerators are subdivided by the wall B into two chambers each. The chambers O O and D D at the ends of the plant are intended for heating the producer-gas, While the intermediate chamber E E and F F are intended for heating the air for combustion.

G G designate the branched flue from the gas-producer, (not shown;) H H, the air-flue; I I, the reversing-valves, and K the flue leading to the chimney, all as usual. The branch G of flue G G is connected with the chamber D by two entrance-ports d d, and with the chamber D by a channel d, which is located between the ports d (Z and extends beneath the chamber D. (See Figs. 1 and 3, especially.) The branch G is similarly connected with the respective chambers O and O by ports 0 c and channel 0. The branches of flue H H are connected with the chambers E E and F F, respectively, by ports e e and channel e and ports ff and channel f, in a similar manner, as described in the case of flue G G.

Each entrance-channel o, d, e, and f is controlled by a damper J and each entranceport 0 c d cl, 850., by a similar damper J, so that in View of the fact that each chamber has its own individual ports or channels the working of the chambers can be regulated at will and the regenerators can be fatigued in a very uniform manner. Two or more flues for the heated gases and a corresponding number for the air are led from the respective chambers of the regenerators to the furnace.

In the example here illustrated a gas-flue L is led from each of the chambers O C and a flue M from each of the chambersD D, While an air-flue N is led from each of the chambers E E and one 0 from each of the chambers F F. The flues N and O for the air are built in the heavy masonry of the ends of the furnace. The gas-fines L and M are carried up separate from the masonry of the furnace somewhat in the form of chimneys, so that ready access can be had for repairs while at the same time mingling of the gas and air cannot take place in case of breaks and leakage in the fines with the consequent destruction of the walls of the furnace. Suitable hand-holes, as t, areprovided about opposite the horizontal portions of the fines to enable obstructions to be removed.

To utilize the regenerators to their utmost capacity the entrance-ports of the flues L, &c.,

leading to the furnace are arranged diagogitudinal Wall subdividing the regeneratornally opposite to the outlet-openings of the chambers into separate air and gas chambers channels c d d, &c., and to the ports a d, O C, D D, &c., a separate flue leading from 850., so that the air and gases are led diagoeach of said chambers to the furnace, and the 5 nally through the chambers. flues G G and H H, having entrance-ports 60 To insure exact working and permanent into the chambers on one side of the partitionefficacy of the dampers J J the same are conwall, and channels leading beneath the said structed practically proof against the action chambers to the chambers on the opposite side of the flame and mechanical attacks. Referof said wall, substantially as and for the pur ring to Fig. 5, each damper is built up of sev pose set forth. 65 oral rows of blocks j of a refractory material. 3. In a regenerative furnace, a central lon- The lower block of each rowis provided with gitudinal Wall subdividing the regeneratora central taper socket j and the bolt Z, uniting chambers into separate air and gas chambers the blocks, is provided at the lower end with C C, D D, &c., a separate fiue leading from a taper head Z adapted to fit the taper socket. each of said chambers to the furnace, and the 70 The outer end of the socket j has a conical fines G G and H H, having entrance-ports enlargementj tapered in a direction reverse into the chambers on one side of the partitionto that of the socket proper, which enla'rgewall, and channels leading beneath said chamment is filled with chamotte stones or other bers to the chambers on the opposite side of refractory material to obtain a perfect clossaid wall, the ports and channels from the 75 ure. The upper surfaces of the blocks are fines G G and H H being diagonally opporecessed, as at m, into which recesses are'laid site the exit-ports of the fines to the furnace, metal bars or plates m, extending across the substantially as described. center row and past the bolt-holes in the end 4. In a regenerative furnace, the combinarows. The bolts Z, passing through the blocks tion of separate air and gas chambers C C, D 80 and bars or plates, unite the several blocks D,&c.,aseparate flueleadingfrom each of said and also the several rows. chambers to the furnace, flues G G and H H,

m is acap-plate and Z the nuts on the bolts, having entrance-ports into the chambers on which being out of the reach of the flames need one side of the partition-wall, and channels 0 not be protected. The draw-rod l is pivoted leading beneath said chambers to the cham- 8 5 by a bolt Z to suitable ears or lugs on the capbers on the opposite side of said wall, air-fines plate. The several draw-rods pass through built in the ends of the furnace and leading a cover m closing the damper-chambers, suitfrom the regenerator-chambers to the furnace, able bosses being formed on said cover to and gas-fluesbuilt up separateand independ- 5 guide the rods and prevent leakage. ent of the furnace, all substantially as de- 90 From the foregoing description it will be scribed. seen that all the metal work for uniting the 5. In a regenerative furnace, a central lonblocks is protected from the flames by the regitudinal Wall subdividing the regeneratorfractory material composing the damper. chambers into separate air and gas chambers 40 hat I claim as new, and desire to secure 0 G, D D, &c., a separate fine leading from 5 by Letters Patent, iseach of said chambers to the furnace, fiues G 1. In a regenerative furnace, the combina- G and H H, having entrance-ports intothe tion,with the regenerator-chambers and their chambers on one side of the partition-wall, roof arches, of a central longitudinal wall'suband channels leading beneath the said cham- 5 dividing the regenerator-chambers into sepabers to the chambers on the opposite side of I00 rate air and gas chambers C C,D D, &c.,and said wall, and a separate damper for each centrally supporting the hearth to relieve the port and channel, substantially as described. arches, a separate flue leading from each of In testimony whereof I have signed my the said chambers to the furnace, and lines G name to this specification in the presence of G and H H, having entrance-ports into the two subscribing witnesses.

chambers on one side of the partition-wall, A i and channels leading beneath the said cham- HEINRICH SOHOENVAELDER hers to the chambers on the opposite side of \Vitnesses:

a "the wall, substantially as described. 0. HERING,

G. Hi'ILsMANN.

2. In a regenerative furnace, a central lon- 

